Comtech EF Data CDD-880 Installation And Operation Manual page 102

Advanced vsat series multi receiver router
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CDD-880 Multi Receiver Router
Ethernet-based Remote Product Management
While "0" is an acceptable assignation, the preferred practical range is from 1
to 255.
Guard Band (0-1000) – Enter the Amount of Transmit Off time, in milliseconds, between
slots to prevent signal overlap.
Preamble – This read-only value identifies the preamble length in VersaFEC frames.
Data Slot Size – This read-only value identifies the minimum number of Versa FEC blocks in
a data slot.
Slots in Frame – This read-only value identifies the allowable total number of slots for each
frame. When assigned slots are needed, they are taken from this pool.
Cycle Length – This read-only value identifies the total cycle length, in milliseconds, of the
TAP message.
LNB LO Frequency – Assign the LNB LO value, used to send RF frequency values in TAP
messages. Resolution = 100Hz.
Satellite Frequency Conversion – Assign the correct Satellite Frequency Conversion value,
in MHz, for this hub unit based on the RF equipment used at this site.
Click [Submit] to save.
ECM Hub Status (read-only)
Current Contention slots available – "Contention slots" are the number of time slots in the
TAP transmission cycle that are available for assignment to requesting (probing) Remotes.
From left to right:
Column
Index
IP
State
Frames Transmitted
Error Frames
Description
This is the automatically assigned internal table index number.
IP Address for the identified CDM-840 Remote Router.
Current state of this CDM-840 – one of the following will apply:
Probing – The unit is requesting service (registration / switching) from
the VMS.
Registered – The unit has been registered with the VMS.
Waiting to switch – the Unit is awaiting dSCPC switch command from
the VMS.
Count of frames received from this CDM-840.
Count of frames received with errors from this CDM-840.
6–32
MN-CDD880
Revision 2

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